It sounds like your computer really did freeze, there is no 'mode' in annotate to escape from. You have to keep holding the buttons to draw and to erase. Once you let go it just stops and you're free to do what you want with the computer again.
It sounds like your computer really did freeze, there is no 'mode' in annotate to escape from. You have to keep holding the buttons to draw and to erase. Once you let go it just stops and you're free to do what you want with the computer again.